If you're looking for a good dose of "What have I done?!" look no further than Terry Cavanagh's extremely short and extremely creepy little RPG, Hero's Adventure. Made for Klik of the Month (and in less than a day), it follows a lonely little boy who heads out into the forest one day to play and, uh... well, you'll see. Use the [arrow] keys to move around, and the [spacebar] to choose options or interact with things. It won't take you more than five minutes or so to play, but you'll be glad you did. Maybe. Possibly. We, uh... we won't judge you either way. (Well, I might. A bit.)
Despite its length, this is one of those games that generated a lot of discussion with some very different opinions amoung the writers here on the site. Some felt it was brilliant, some thought it was funny, and others were just a little bit freaked out. To say much more would be spoiling it, and this is one of those things best taken with only the barest of preparation... and maybe a grain of salt. Once you've played it, let us know what, if anything, you thought in the comments, but remember... if you've played an RPG before, chances are you've had your share of random encounters too.